On Nov 13, 12:34 pm, Jens-Peer Kuska <ku... at informatik.uni-leipzig.de>
wrote:
> Hi,
>
> and
>
> http://mathworld.wolfram.com/Ellipsoid.html
>
> has no parametric or implicit equation for you ?
> And you can't even download the notebookhttp://mathworld.wolfram.com/note=
books/Surfaces/Ellipsoid.nb
>
> ??
> Too bad
>
> Regards
> Jens
Hi Jens,
Thank you so much for your reply.
when i wrote this post, I was sure that i will get a reply from you
first ;-)
I already download the notebook long ago.
I did not understand anything from that it seems to be too much of
mathematics to me.
In my case i have only 4 unknown parameters ( 1 = Sqrt[r^2/R^2 + d^2/
D^2] ). Typically, also shown in the websitehttp://mathworld.wolfram.com/El=
lipsoid.html,
for a ellipsoidal there must at least three coordinates. But the
equation which is i have seems to be different. please tell me if am
wrong. Please understand i am using mathematica 5.2.
I used an ImplicitPlot like this i get only 2D plot.
ImplicitPlot[Sqrt[(x^2/9) + (y^2/4)] == 1, {x, -3, 3}]
My question is for 3D it is more complicated? do i need to use much
of trigonometry for the angles?
thanks again
May